linux-kernel - [patch for-3.7] thermal, cpufreq: Fix build when CPU_FREQ

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Date:	Mon, 15 Oct 2012 13:40:15 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
cc:	Amit Daniel Kachhap <amit.kachhap@...aro.org>,
	Zhang Rui <rui.zhang@...el.com>,
	Viresh Kumar <viresh.linux@...il.com>,
	Len Brown <len.brown@...el.com>, linux-kernel@...r.kernel.org
Subject: [patch for-3.7] thermal, cpufreq: Fix build when CPU_FREQ_TABLE
 isn't configured

Commit 02361418 ("thermal: add generic cpufreq cooling implementation") 
requires cpufreq_frequency_get_table(), but that function is only defined 
for CONFIG_CPU_FREQ_TABLE resulting in the following build error:

drivers/built-in.o: In function `cpufreq_get_max_state':
drivers/thermal/cpu_cooling.c:259: undefined reference to `cpufreq_frequency_get_table'
drivers/built-in.o: In function `get_cpu_frequency':
drivers/thermal/cpu_cooling.c:129: undefined reference to `cpufreq_frequency_get_table'

Fix it by selecting CONFIG_CPU_FREQ_TABLE for such a configuration.

It turns out CONFIG_EXYNOS_THERMAL also needs CONFIG_CPU_FREQ_TABLE, so 
select it there as well.

Signed-off-by: David Rientjes <rientjes@...gle.com>
---
 drivers/thermal/Kconfig |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -22,6 +22,7 @@ config THERMAL_HWMON
 config CPU_THERMAL
 	bool "generic cpu cooling support"
 	depends on THERMAL && CPU_FREQ
+	select CPU_FREQ_TABLE
 	help
 	  This implements the generic cpu cooling mechanism through frequency
 	  reduction, cpu hotplug and any other ways of reducing temperature. An
@@ -50,6 +51,7 @@ config RCAR_THERMAL
 config EXYNOS_THERMAL
 	tristate "Temperature sensor on Samsung EXYNOS"
 	depends on (ARCH_EXYNOS4 || ARCH_EXYNOS5) && THERMAL
+	select CPU_FREQ_TABLE
 	help
 	  If you say yes here you get support for TMU (Thermal Managment
 	  Unit) on SAMSUNG EXYNOS series of SoC.
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